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1 #
2 # RTC class/drivers configuration
3 #
45 config RTC_LIB
6 bool
78 menuconfig RTC_CLASS
9 bool "Real Time Clock"
10 default n
11 depends on !S390 && !UML
12 select RTC_LIB
13 help
14 Generic RTC class support. If you say yes here, you will
15 be allowed to plug one or more RTCs to your system. You will
16 probably want to enable one or more of the interfaces below.
1718 if RTC_CLASS
1920 config RTC_HCTOSYS
21 bool "Set system time from RTC on startup and resume"
22 default y
23 help
24 If you say yes here, the system time (wall clock) will be set using
25 the value read from a specified RTC device. This is useful to avoid
26 unnecessary fsck runs at boot time, and to network better.
2728 config RTC_SYSTOHC
29 bool "Set the RTC time based on NTP synchronization"
30 default y
31 help
32 If you say yes here, the system time (wall clock) will be stored
33 in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
34 minutes if userspace reports synchronized NTP status.
3536 config RTC_HCTOSYS_DEVICE
37 string "RTC used to set the system time"
38 depends on RTC_HCTOSYS = y || RTC_SYSTOHC = y
39 default "rtc0"
40 help
41 The RTC device that will be used to (re)initialize the system
42 clock, usually rtc0. Initialization is done when the system
43 starts up, and when it resumes from a low power state. This
44 device should record time in UTC, since the kernel won't do
45 timezone correction.
4647 The driver for this RTC device must be loaded before late_initcall
48 functions run, so it must usually be statically linked.
4950 This clock should be battery-backed, so that it reads the correct
51 time when the system boots from a power-off state. Otherwise, your
52 system will need an external clock source (like an NTP server).
5354 If the clock you specify here is not battery backed, it may still
55 be useful to reinitialize system time when resuming from system
56 sleep states. Do not specify an RTC here unless it stays powered
57 during all this system's supported sleep states.
5859 config RTC_DEBUG
60 bool "RTC debug support"
61 help
62 Say yes here to enable debugging support in the RTC framework
63 and individual RTC drivers.
6465 comment "RTC interfaces"
6667 config RTC_INTF_SYSFS
68 boolean "/sys/class/rtc/rtcN (sysfs)"
69 depends on SYSFS
70 default RTC_CLASS
71 help
72 Say yes here if you want to use your RTCs using sysfs interfaces,
73 /sys/class/rtc/rtc0 through /sys/.../rtcN.
7475 If unsure, say Y.
7677 config RTC_INTF_PROC
78 boolean "/proc/driver/rtc (procfs for rtcN)"
79 depends on PROC_FS
80 default RTC_CLASS
81 help
82 Say yes here if you want to use your system clock RTC through
83 the proc interface, /proc/driver/rtc.
84 Other RTCs will not be available through that API.
85 If there is no RTC for the system clock, then the first RTC(rtc0)
86 is used by default.
8788 If unsure, say Y.
8990 config RTC_INTF_DEV
91 boolean "/dev/rtcN (character devices)"
92 default RTC_CLASS
93 help
94 Say yes here if you want to use your RTCs using the /dev
95 interfaces, which "udev" sets up as /dev/rtc0 through
96 /dev/rtcN.
9798 You may want to set up a symbolic link so one of these
99 can be accessed as /dev/rtc, which is a name
100 expected by "hwclock" and some other programs. Recent
101 versions of "udev" are known to set up the symlink for you.
102103 If unsure, say Y.
104105 config RTC_INTF_DEV_UIE_EMUL
106 bool "RTC UIE emulation on dev interface"
107 depends on RTC_INTF_DEV
108 help
109 Provides an emulation for RTC_UIE if the underlying rtc chip
110 driver does not expose RTC_UIE ioctls. Those requests generate
111 once-per-second update interrupts, used for synchronization.
112113 The emulation code will read the time from the hardware
114 clock several times per second, please enable this option
115 only if you know that you really need it.
116117 config RTC_DRV_TEST
118 tristate "Test driver/device"
119 help
120 If you say yes here you get support for the
121 RTC test driver. It's a software RTC which can be
122 used to test the RTC subsystem APIs. It gets
123 the time from the system clock.
124 You want this driver only if you are doing development
125 on the RTC subsystem. Please read the source code
126 for further details.
127128 This driver can also be built as a module. If so, the module
129 will be called rtc-test.
130131 comment "I2C RTC drivers"
132 depends on I2C
133134 if I2C
135136 config RTC_DRV_88PM860X
137 tristate "Marvell 88PM860x"
138 depends on I2C && MFD_88PM860X
139 help
140 If you say yes here you get support for RTC function in Marvell
141 88PM860x chips.
142143 This driver can also be built as a module. If so, the module
144 will be called rtc-88pm860x.
145146 config RTC_DRV_88PM80X
147 tristate "Marvell 88PM80x"
148 depends on I2C && MFD_88PM800
149 help
150 If you say yes here you get support for RTC function in Marvell
151 88PM80x chips.
152153 This driver can also be built as a module. If so, the module
154 will be called rtc-88pm80x.
155156 config RTC_DRV_AS3722
157 tristate "ams AS3722 RTC driver"
158 depends on MFD_AS3722
159 help
160 If you say yes here you get support for the RTC of ams AS3722 PMIC
161 chips.
162163 This driver can also be built as a module. If so, the module
164 will be called rtc-as3722.
165166 config RTC_DRV_DS1307
167 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
168 help
169 If you say yes here you get support for various compatible RTC
170 chips (often with battery backup) connected with I2C. This driver
171 should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
172 EPSON RX-8025 and probably other chips. In some cases the RTC
173 must already have been initialized (by manufacturing or a
174 bootloader).
175176 The first seven registers on these chips hold an RTC, and other
177 registers may add features such as NVRAM, a trickle charger for
178 the RTC/NVRAM backup power, and alarms. NVRAM is visible in
179 sysfs, but other chip features may not be available.
180181 This driver can also be built as a module. If so, the module
182 will be called rtc-ds1307.
183184 config RTC_DRV_DS1374
185 tristate "Dallas/Maxim DS1374"
186 depends on I2C
187 help
188 If you say yes here you get support for Dallas Semiconductor
189 DS1374 real-time clock chips. If an interrupt is associated
190 with the device, the alarm functionality is supported.
191192 This driver can also be built as a module. If so, the module
193 will be called rtc-ds1374.
194195 config RTC_DRV_DS1374_WDT
196 bool "Dallas/Maxim DS1374 watchdog timer"
197 depends on RTC_DRV_DS1374
198 help
199 If you say Y here you will get support for the
200 watchdog timer in the Dallas Semiconductor DS1374
201 real-time clock chips.
202203 config RTC_DRV_DS1672
204 tristate "Dallas/Maxim DS1672"
205 help
206 If you say yes here you get support for the
207 Dallas/Maxim DS1672 timekeeping chip.
208209 This driver can also be built as a module. If so, the module
210 will be called rtc-ds1672.
211212 config RTC_DRV_DS3232
213 tristate "Dallas/Maxim DS3232"
214 depends on I2C
215 help
216 If you say yes here you get support for Dallas Semiconductor
217 DS3232 real-time clock chips. If an interrupt is associated
218 with the device, the alarm functionality is supported.
219220 This driver can also be built as a module. If so, the module
221 will be called rtc-ds3232.
222223 config RTC_DRV_HYM8563
224 tristate "Haoyu Microelectronics HYM8563"
225 depends on I2C && OF
226 help
227 Say Y to enable support for the HYM8563 I2C RTC chip. Apart
228 from the usual rtc functions it provides a clock output of
229 up to 32kHz.
230231 This driver can also be built as a module. If so, the module
232 will be called rtc-hym8563.
233234 config RTC_DRV_LP8788
235 tristate "TI LP8788 RTC driver"
236 depends on MFD_LP8788
237 help
238 Say Y to enable support for the LP8788 RTC/ALARM driver.
239240 config RTC_DRV_MAX6900
241 tristate "Maxim MAX6900"
242 help
243 If you say yes here you will get support for the
244 Maxim MAX6900 I2C RTC chip.
245246 This driver can also be built as a module. If so, the module
247 will be called rtc-max6900.
248249 config RTC_DRV_MAX8907
250 tristate "Maxim MAX8907"
251 depends on MFD_MAX8907
252 help
253 If you say yes here you will get support for the
254 RTC of Maxim MAX8907 PMIC.
255256 This driver can also be built as a module. If so, the module
257 will be called rtc-max8907.
258259 config RTC_DRV_MAX8925
260 tristate "Maxim MAX8925"
261 depends on MFD_MAX8925
262 help
263 If you say yes here you will get support for the
264 RTC of Maxim MAX8925 PMIC.
265266 This driver can also be built as a module. If so, the module
267 will be called rtc-max8925.
268269 config RTC_DRV_MAX8998
270 tristate "Maxim MAX8998"
271 depends on MFD_MAX8998
272 help
273 If you say yes here you will get support for the
274 RTC of Maxim MAX8998 PMIC.
275276 This driver can also be built as a module. If so, the module
277 will be called rtc-max8998.
278279 config RTC_DRV_MAX8997
280 tristate "Maxim MAX8997"
281 depends on MFD_MAX8997
282 help
283 If you say yes here you will get support for the
284 RTC of Maxim MAX8997 PMIC.
285286 This driver can also be built as a module. If so, the module
287 will be called rtc-max8997.
288289 config RTC_DRV_MAX77686
290 tristate "Maxim MAX77686"
291 depends on MFD_MAX77686
292 help
293 If you say yes here you will get support for the
294 RTC of Maxim MAX77686 PMIC.
295296 This driver can also be built as a module. If so, the module
297 will be called rtc-max77686.
298299 config RTC_DRV_RK808
300 tristate "Rockchip RK808 RTC"
301 depends on MFD_RK808
302 help
303 If you say yes here you will get support for the
304 RTC of RK808 PMIC.
305306 This driver can also be built as a module. If so, the module
307 will be called rk808-rtc.
308309 config RTC_DRV_MAX77802
310 tristate "Maxim 77802 RTC"
311 depends on MFD_MAX77686
312 help
313 If you say yes here you will get support for the
314 RTC of Maxim MAX77802 PMIC.
315316 This driver can also be built as a module. If so, the module
317 will be called rtc-max77802.
318319 config RTC_DRV_RS5C372
320 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
321 help
322 If you say yes here you get support for the
323 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
324325 This driver can also be built as a module. If so, the module
326 will be called rtc-rs5c372.
327328 config RTC_DRV_ISL1208
329 tristate "Intersil ISL1208"
330 help
331 If you say yes here you get support for the
332 Intersil ISL1208 RTC chip.
333334 This driver can also be built as a module. If so, the module
335 will be called rtc-isl1208.
336337 config RTC_DRV_ISL12022
338 tristate "Intersil ISL12022"
339 help
340 If you say yes here you get support for the
341 Intersil ISL12022 RTC chip.
342343 This driver can also be built as a module. If so, the module
344 will be called rtc-isl12022.
345346 config RTC_DRV_ISL12057
347 depends on I2C
348 select REGMAP_I2C
349 tristate "Intersil ISL12057"
350 help
351 If you say yes here you get support for the Intersil ISL12057
352 I2C RTC chip.
353354 This driver can also be built as a module. If so, the module
355 will be called rtc-isl12057.
356357 config RTC_DRV_X1205
358 tristate "Xicor/Intersil X1205"
359 help
360 If you say yes here you get support for the
361 Xicor/Intersil X1205 RTC chip.
362363 This driver can also be built as a module. If so, the module
364 will be called rtc-x1205.
365366 config RTC_DRV_PALMAS
367 tristate "TI Palmas RTC driver"
368 depends on MFD_PALMAS
369 help
370 If you say yes here you get support for the RTC of TI PALMA series PMIC
371 chips.
372373 This driver can also be built as a module. If so, the module
374 will be called rtc-palma.
375376 config RTC_DRV_PCF2127
377 tristate "NXP PCF2127"
378 help
379 If you say yes here you get support for the NXP PCF2127/29 RTC
380 chips.
381382 This driver can also be built as a module. If so, the module
383 will be called rtc-pcf2127.
384385 config RTC_DRV_PCF8523
386 tristate "NXP PCF8523"
387 help
388 If you say yes here you get support for the NXP PCF8523 RTC
389 chips.
390391 This driver can also be built as a module. If so, the module
392 will be called rtc-pcf8523.
393394 config RTC_DRV_PCF8563
395 tristate "Philips PCF8563/Epson RTC8564"
396 help
397 If you say yes here you get support for the
398 Philips PCF8563 RTC chip. The Epson RTC8564
399 should work as well.
400401 This driver can also be built as a module. If so, the module
402 will be called rtc-pcf8563.
403404 config RTC_DRV_PCF85063
405 tristate "nxp PCF85063"
406 help
407 If you say yes here you get support for the PCF85063 RTC chip
408409 This driver can also be built as a module. If so, the module
410 will be called rtc-pcf85063.
411412 config RTC_DRV_PCF8583
413 tristate "Philips PCF8583"
414 help
415 If you say yes here you get support for the Philips PCF8583
416 RTC chip found on Acorn RiscPCs. This driver supports the
417 platform specific method of retrieving the current year from
418 the RTC's SRAM. It will work on other platforms with the same
419 chip, but the year will probably have to be tweaked.
420421 This driver can also be built as a module. If so, the module
422 will be called rtc-pcf8583.
423424 config RTC_DRV_M41T80
425 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
426 help
427 If you say Y here you will get support for the ST M41T60
428 and M41T80 RTC chips series. Currently, the following chips are
429 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
430 M41ST85, M41ST87, and MicroCrystal RV4162.
431432 This driver can also be built as a module. If so, the module
433 will be called rtc-m41t80.
434435 config RTC_DRV_M41T80_WDT
436 bool "ST M41T65/M41T80 series RTC watchdog timer"
437 depends on RTC_DRV_M41T80
438 help
439 If you say Y here you will get support for the
440 watchdog timer in the ST M41T60 and M41T80 RTC chips series.
441442 config RTC_DRV_BQ32K
443 tristate "TI BQ32000"
444 help
445 If you say Y here you will get support for the TI
446 BQ32000 I2C RTC chip.
447448 This driver can also be built as a module. If so, the module
449 will be called rtc-bq32k.
450451 config RTC_DRV_DM355EVM
452 tristate "TI DaVinci DM355 EVM RTC"
453 depends on MFD_DM355EVM_MSP
454 help
455 Supports the RTC firmware in the MSP430 on the DM355 EVM.
456457 config RTC_DRV_TWL92330
458 boolean "TI TWL92330/Menelaus"
459 depends on MENELAUS
460 help
461 If you say yes here you get support for the RTC on the
462 TWL92330 "Menelaus" power management chip, used with OMAP2
463 platforms. The support is integrated with the rest of
464 the Menelaus driver; it's not separate module.
465466 config RTC_DRV_TWL4030
467 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
468 depends on TWL4030_CORE
469 help
470 If you say yes here you get support for the RTC on the
471 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
472473 This driver can also be built as a module. If so, the module
474 will be called rtc-twl.
475476 config RTC_DRV_TPS6586X
477 tristate "TI TPS6586X RTC driver"
478 depends on MFD_TPS6586X
479 help
480 TI Power Management IC TPS6586X supports RTC functionality
481 along with alarm. This driver supports the RTC driver for
482 the TPS6586X RTC module.
483484 config RTC_DRV_TPS65910
485 tristate "TI TPS65910 RTC driver"
486 depends on RTC_CLASS && MFD_TPS65910
487 help
488 If you say yes here you get support for the RTC on the
489 TPS65910 chips.
490491 This driver can also be built as a module. If so, the module
492 will be called rtc-tps65910.
493494 config RTC_DRV_TPS80031
495 tristate "TI TPS80031/TPS80032 RTC driver"
496 depends on MFD_TPS80031
497 help
498 TI Power Management IC TPS80031 supports RTC functionality
499 along with alarm. This driver supports the RTC driver for
500 the TPS80031 RTC module.
501502 config RTC_DRV_RC5T583
503 tristate "RICOH 5T583 RTC driver"
504 depends on MFD_RC5T583
505 help
506 If you say yes here you get support for the RTC on the
507 RICOH 5T583 chips.
508509 This driver can also be built as a module. If so, the module
510 will be called rtc-rc5t583.
511512 config RTC_DRV_S35390A
513 tristate "Seiko Instruments S-35390A"
514 select BITREVERSE
515 help
516 If you say yes here you will get support for the Seiko
517 Instruments S-35390A.
518519 This driver can also be built as a module. If so the module
520 will be called rtc-s35390a.
521522 config RTC_DRV_FM3130
523 tristate "Ramtron FM3130"
524 help
525 If you say Y here you will get support for the
526 Ramtron FM3130 RTC chips.
527 Ramtron FM3130 is a chip with two separate devices inside,
528 RTC clock and FRAM. This driver provides only RTC functionality.
529530 This driver can also be built as a module. If so the module
531 will be called rtc-fm3130.
532533 config RTC_DRV_RX8581
534 tristate "Epson RX-8581"
535 help
536 If you say yes here you will get support for the Epson RX-8581.
537538 This driver can also be built as a module. If so the module
539 will be called rtc-rx8581.
540541 config RTC_DRV_RX8025
542 tristate "Epson RX-8025SA/NB"
543 help
544 If you say yes here you get support for the Epson
545 RX-8025SA/NB RTC chips.
546547 This driver can also be built as a module. If so, the module
548 will be called rtc-rx8025.
549550 config RTC_DRV_EM3027
551 tristate "EM Microelectronic EM3027"
552 help
553 If you say yes here you get support for the EM
554 Microelectronic EM3027 RTC chips.
555556 This driver can also be built as a module. If so, the module
557 will be called rtc-em3027.
558559 config RTC_DRV_RV3029C2
560 tristate "Micro Crystal RTC"
561 help
562 If you say yes here you get support for the Micro Crystal
563 RV3029-C2 RTC chips.
564565 This driver can also be built as a module. If so, the module
566 will be called rtc-rv3029c2.
567568 config RTC_DRV_S5M
569 tristate "Samsung S2M/S5M series"
570 depends on MFD_SEC_CORE
571 help
572 If you say yes here you will get support for the
573 RTC of Samsung S2MPS14 and S5M PMIC series.
574575 This driver can also be built as a module. If so, the module
576 will be called rtc-s5m.
577578 endif # I2C
579580 comment "SPI RTC drivers"
581582 if SPI_MASTER
583584 config RTC_DRV_M41T93
585 tristate "ST M41T93"
586 help
587 If you say yes here you will get support for the
588 ST M41T93 SPI RTC chip.
589590 This driver can also be built as a module. If so, the module
591 will be called rtc-m41t93.
592593 config RTC_DRV_M41T94
594 tristate "ST M41T94"
595 help
596 If you say yes here you will get support for the
597 ST M41T94 SPI RTC chip.
598599 This driver can also be built as a module. If so, the module
600 will be called rtc-m41t94.
601602 config RTC_DRV_DS1305
603 tristate "Dallas/Maxim DS1305/DS1306"
604 help
605 Select this driver to get support for the Dallas/Maxim DS1305
606 and DS1306 real time clock chips. These support a trickle
607 charger, alarms, and NVRAM in addition to the clock.
608609 This driver can also be built as a module. If so, the module
610 will be called rtc-ds1305.
611612 config RTC_DRV_DS1343
613 select REGMAP_SPI
614 tristate "Dallas/Maxim DS1343/DS1344"
615 help
616 If you say yes here you get support for the
617 Dallas/Maxim DS1343 and DS1344 real time clock chips.
618 Support for trickle charger, alarm is provided.
619620 This driver can also be built as a module. If so, the module
621 will be called rtc-ds1343.
622623 config RTC_DRV_DS1347
624 tristate "Dallas/Maxim DS1347"
625 help
626 If you say yes here you get support for the
627 Dallas/Maxim DS1347 chips.
628629 This driver only supports the RTC feature, and not other chip
630 features such as alarms.
631632 This driver can also be built as a module. If so, the module
633 will be called rtc-ds1347.
634635 config RTC_DRV_DS1390
636 tristate "Dallas/Maxim DS1390/93/94"
637 help
638 If you say yes here you get support for the
639 Dallas/Maxim DS1390/93/94 chips.
640641 This driver only supports the RTC feature, and not other chip
642 features such as alarms and trickle charging.
643644 This driver can also be built as a module. If so, the module
645 will be called rtc-ds1390.
646647 config RTC_DRV_MAX6902
648 tristate "Maxim MAX6902"
649 help
650 If you say yes here you will get support for the
651 Maxim MAX6902 SPI RTC chip.
652653 This driver can also be built as a module. If so, the module
654 will be called rtc-max6902.
655656 config RTC_DRV_R9701
657 tristate "Epson RTC-9701JE"
658 help
659 If you say yes here you will get support for the
660 Epson RTC-9701JE SPI RTC chip.
661662 This driver can also be built as a module. If so, the module
663 will be called rtc-r9701.
664665 config RTC_DRV_RS5C348
666 tristate "Ricoh RS5C348A/B"
667 help
668 If you say yes here you get support for the
669 Ricoh RS5C348A and RS5C348B RTC chips.
670671 This driver can also be built as a module. If so, the module
672 will be called rtc-rs5c348.
673674 config RTC_DRV_DS3234
675 tristate "Maxim/Dallas DS3234"
676 help
677 If you say yes here you get support for the
678 Maxim/Dallas DS3234 SPI RTC chip.
679680 This driver can also be built as a module. If so, the module
681 will be called rtc-ds3234.
682683 config RTC_DRV_PCF2123
684 tristate "NXP PCF2123"
685 help
686 If you say yes here you get support for the NXP PCF2123
687 RTC chip.
688689 This driver can also be built as a module. If so, the module
690 will be called rtc-pcf2123.
691692 config RTC_DRV_RX4581
693 tristate "Epson RX-4581"
694 help
695 If you say yes here you will get support for the Epson RX-4581.
696697 This driver can also be built as a module. If so the module
698 will be called rtc-rx4581.
699700 config RTC_DRV_MCP795
701 tristate "Microchip MCP795"
702 help
703 If you say yes here you will get support for the Microchip MCP795.
704705 This driver can also be built as a module. If so the module
706 will be called rtc-mcp795.
707708 endif # SPI_MASTER
709710 comment "Platform RTC drivers"
711712 # this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
713 # requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
714 # global rtc_lock ... it's not yet just another platform_device.
715716 config RTC_DRV_CMOS
717 tristate "PC-style 'CMOS'"
718 depends on X86 || ARM || M32R || PPC || MIPS || SPARC64
719 default y if X86
720 help
721 Say "yes" here to get direct support for the real time clock
722 found in every PC or ACPI-based system, and some other boards.
723 Specifically the original MC146818, compatibles like those in
724 PC south bridges, the DS12887 or M48T86, some multifunction
725 or LPC bus chips, and so on.
726727 Your system will need to define the platform device used by
728 this driver, otherwise it won't be accessible. This means
729 you can safely enable this driver if you don't know whether
730 or not your board has this kind of hardware.
731732 This driver can also be built as a module. If so, the module
733 will be called rtc-cmos.
734735 config RTC_DRV_ALPHA
736 bool "Alpha PC-style CMOS"
737 depends on ALPHA
738 default y
739 help
740 Direct support for the real-time clock found on every Alpha
741 system, specifically MC146818 compatibles. If in doubt, say Y.
742743 config RTC_DRV_VRTC
744 tristate "Virtual RTC for Intel MID platforms"
745 depends on X86_INTEL_MID
746 default y if X86_INTEL_MID
747748 help
749 Say "yes" here to get direct support for the real time clock
750 found on Moorestown platforms. The VRTC is a emulated RTC that
751 derives its clock source from a real RTC in the PMIC. The MC146818
752 style programming interface is mostly conserved, but any
753 updates are done via IPC calls to the system controller FW.
754755 config RTC_DRV_DS1216
756 tristate "Dallas DS1216"
757 depends on SNI_RM
758 help
759 If you say yes here you get support for the Dallas DS1216 RTC chips.
760761 config RTC_DRV_DS1286
762 tristate "Dallas DS1286"
763 depends on HAS_IOMEM
764 help
765 If you say yes here you get support for the Dallas DS1286 RTC chips.
766767 config RTC_DRV_DS1302
768 tristate "Dallas DS1302"
769 depends on SH_SECUREEDGE5410
770 help
771 If you say yes here you get support for the Dallas DS1302 RTC chips.
772773 config RTC_DRV_DS1511
774 tristate "Dallas DS1511"
775 depends on HAS_IOMEM
776 help
777 If you say yes here you get support for the
778 Dallas DS1511 timekeeping/watchdog chip.
779780 This driver can also be built as a module. If so, the module
781 will be called rtc-ds1511.
782783 config RTC_DRV_DS1553
784 tristate "Maxim/Dallas DS1553"
785 depends on HAS_IOMEM
786 help
787 If you say yes here you get support for the
788 Maxim/Dallas DS1553 timekeeping chip.
789790 This driver can also be built as a module. If so, the module
791 will be called rtc-ds1553.
792793 config RTC_DRV_DS1742
794 tristate "Maxim/Dallas DS1742/1743"
795 depends on HAS_IOMEM
796 help
797 If you say yes here you get support for the
798 Maxim/Dallas DS1742/1743 timekeeping chip.
799800 This driver can also be built as a module. If so, the module
801 will be called rtc-ds1742.
802803 config RTC_DRV_DS2404
804 tristate "Maxim/Dallas DS2404"
805 help
806 If you say yes here you get support for the
807 Dallas DS2404 RTC chip.
808809 This driver can also be built as a module. If so, the module
810 will be called rtc-ds2404.
811812 config RTC_DRV_DA9052
813 tristate "Dialog DA9052/DA9053 RTC"
814 depends on PMIC_DA9052
815 help
816 Say y here to support the RTC driver for Dialog Semiconductor
817 DA9052-BC and DA9053-AA/Bx PMICs.
818819 config RTC_DRV_DA9055
820 tristate "Dialog Semiconductor DA9055 RTC"
821 depends on MFD_DA9055
822 help
823 If you say yes here you will get support for the
824 RTC of the Dialog DA9055 PMIC.
825826 This driver can also be built as a module. If so, the module
827 will be called rtc-da9055
828829 config RTC_DRV_DA9063
830 tristate "Dialog Semiconductor DA9063 RTC"
831 depends on MFD_DA9063
832 help
833 If you say yes here you will get support for the RTC subsystem
834 of the Dialog Semiconductor DA9063.
835836 This driver can also be built as a module. If so, the module
837 will be called "rtc-da9063".
838839 config RTC_DRV_EFI
840 tristate "EFI RTC"
841 depends on EFI && !X86
842 help
843 If you say yes here you will get support for the EFI
844 Real Time Clock.
845846 This driver can also be built as a module. If so, the module
847 will be called rtc-efi.
848849 config RTC_DRV_STK17TA8
850 tristate "Simtek STK17TA8"
851 depends on HAS_IOMEM
852 help
853 If you say yes here you get support for the
854 Simtek STK17TA8 timekeeping chip.
855856 This driver can also be built as a module. If so, the module
857 will be called rtc-stk17ta8.
858859 config RTC_DRV_M48T86
860 tristate "ST M48T86/Dallas DS12887"
861 help
862 If you say Y here you will get support for the
863 ST M48T86 and Dallas DS12887 RTC chips.
864865 This driver can also be built as a module. If so, the module
866 will be called rtc-m48t86.
867868 config RTC_DRV_M48T35
869 tristate "ST M48T35"
870 depends on HAS_IOMEM
871 help
872 If you say Y here you will get support for the
873 ST M48T35 RTC chip.
874875 This driver can also be built as a module, if so, the module
876 will be called "rtc-m48t35".
877878 config RTC_DRV_M48T59
879 tristate "ST M48T59/M48T08/M48T02"
880 depends on HAS_IOMEM
881 help
882 If you say Y here you will get support for the
883 ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
884885 These chips are usually found in Sun SPARC and UltraSPARC
886 workstations.
887888 This driver can also be built as a module, if so, the module
889 will be called "rtc-m48t59".
890891 config RTC_DRV_MSM6242
892 tristate "Oki MSM6242"
893 depends on HAS_IOMEM
894 help
895 If you say yes here you get support for the Oki MSM6242
896 timekeeping chip. It is used in some Amiga models (e.g. A2000).
897898 This driver can also be built as a module. If so, the module
899 will be called rtc-msm6242.
900901 config RTC_DRV_BQ4802
902 tristate "TI BQ4802"
903 depends on HAS_IOMEM
904 help
905 If you say Y here you will get support for the TI
906 BQ4802 RTC chip.
907908 This driver can also be built as a module. If so, the module
909 will be called rtc-bq4802.
910911 config RTC_DRV_RP5C01
912 tristate "Ricoh RP5C01"
913 depends on HAS_IOMEM
914 help
915 If you say yes here you get support for the Ricoh RP5C01
916 timekeeping chip. It is used in some Amiga models (e.g. A3000
917 and A4000).
918919 This driver can also be built as a module. If so, the module
920 will be called rtc-rp5c01.
921922 config RTC_DRV_V3020
923 tristate "EM Microelectronic V3020"
924 help
925 If you say yes here you will get support for the
926 EM Microelectronic v3020 RTC chip.
927928 This driver can also be built as a module. If so, the module
929 will be called rtc-v3020.
930931 config RTC_DRV_WM831X
932 tristate "Wolfson Microelectronics WM831x RTC"
933 depends on MFD_WM831X
934 help
935 If you say yes here you will get support for the RTC subsystem
936 of the Wolfson Microelectronics WM831X series PMICs.
937938 This driver can also be built as a module. If so, the module
939 will be called "rtc-wm831x".
940941 config RTC_DRV_WM8350
942 tristate "Wolfson Microelectronics WM8350 RTC"
943 depends on MFD_WM8350
944 help
945 If you say yes here you will get support for the RTC subsystem
946 of the Wolfson Microelectronics WM8350.
947948 This driver can also be built as a module. If so, the module
949 will be called "rtc-wm8350".
950951 config RTC_DRV_SPEAR
952 tristate "SPEAR ST RTC"
953 depends on PLAT_SPEAR
954 default y
955 help
956 If you say Y here you will get support for the RTC found on
957 spear
958959 config RTC_DRV_PCF50633
960 depends on MFD_PCF50633
961 tristate "NXP PCF50633 RTC"
962 help
963 If you say yes here you get support for the RTC subsystem of the
964 NXP PCF50633 used in embedded systems.
965966 config RTC_DRV_AB3100
967 tristate "ST-Ericsson AB3100 RTC"
968 depends on AB3100_CORE
969 default y if AB3100_CORE
970 help
971 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
972 support. This chip contains a battery- and capacitor-backed RTC.
973974 config RTC_DRV_AB8500
975 tristate "ST-Ericsson AB8500 RTC"
976 depends on AB8500_CORE
977 select RTC_INTF_DEV
978 select RTC_INTF_DEV_UIE_EMUL
979 help
980 Select this to enable the ST-Ericsson AB8500 power management IC RTC
981 support. This chip contains a battery- and capacitor-backed RTC.
982983 config RTC_DRV_NUC900
984 tristate "NUC910/NUC920 RTC driver"
985 depends on ARCH_W90X900
986 help
987 If you say yes here you get support for the RTC subsystem of the
988 NUC910/NUC920 used in embedded systems.
989990 config RTC_DRV_OPAL
991 tristate "IBM OPAL RTC driver"
992 depends on PPC_POWERNV
993 default y
994 help
995 If you say yes here you get support for the PowerNV platform RTC
996 driver based on OPAL interfaces.
997998 This driver can also be built as a module. If so, the module
999 will be called rtc-opal.
10001001 comment "on-CPU RTC drivers"
10021003 config RTC_DRV_DAVINCI
1004 tristate "TI DaVinci RTC"
1005 depends on ARCH_DAVINCI_DM365
1006 help
1007 If you say yes here you get support for the RTC on the
1008 DaVinci platforms (DM365).
10091010 This driver can also be built as a module. If so, the module
1011 will be called rtc-davinci.
10121013 config RTC_DRV_IMXDI
1014 tristate "Freescale IMX DryIce Real Time Clock"
1015 depends on ARCH_MXC
1016 help
1017 Support for Freescale IMX DryIce RTC
10181019 This driver can also be built as a module, if so, the module
1020 will be called "rtc-imxdi".
10211022 config RTC_DRV_OMAP
1023 tristate "TI OMAP1"
1024 depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX || SOC_AM33XX
1025 help
1026 Say "yes" here to support the on chip real time clock
1027 present on TI OMAP1, AM33xx and DA8xx/OMAP-L13x.
10281029 This driver can also be built as a module, if so, module
1030 will be called rtc-omap.
10311032 config HAVE_S3C_RTC
1033 bool
1034 help
1035 This will include RTC support for Samsung SoCs. If
1036 you want to include RTC support for any machine, kindly
1037 select this in the respective mach-XXXX/Kconfig file.
10381039 config RTC_DRV_S3C
1040 tristate "Samsung S3C series SoC RTC"
1041 depends on ARCH_S3C64XX || HAVE_S3C_RTC
1042 help
1043 RTC (Realtime Clock) driver for the clock inbuilt into the
1044 Samsung S3C24XX series of SoCs. This can provide periodic
1045 interrupt rates from 1Hz to 64Hz for user programs, and
1046 wakeup from Alarm.
10471048 The driver currently supports the common features on all the
1049 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1050 and S3C2442.
10511052 This driver can also be build as a module. If so, the module
1053 will be called rtc-s3c.
10541055 config RTC_DRV_EP93XX
1056 tristate "Cirrus Logic EP93XX"
1057 depends on ARCH_EP93XX
1058 help
1059 If you say yes here you get support for the
1060 RTC embedded in the Cirrus Logic EP93XX processors.
10611062 This driver can also be built as a module. If so, the module
1063 will be called rtc-ep93xx.
10641065 config RTC_DRV_SA1100
1066 tristate "SA11x0/PXA2xx/PXA910"
1067 depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1068 help
1069 If you say Y here you will get access to the real time clock
1070 built into your SA11x0 or PXA2xx CPU.
10711072 To compile this driver as a module, choose M here: the
1073 module will be called rtc-sa1100.
10741075 config RTC_DRV_SH
1076 tristate "SuperH On-Chip RTC"
1077 depends on SUPERH && HAVE_CLK
1078 help
1079 Say Y here to enable support for the on-chip RTC found in
1080 most SuperH processors.
10811082 To compile this driver as a module, choose M here: the
1083 module will be called rtc-sh.
10841085 config RTC_DRV_VR41XX
1086 tristate "NEC VR41XX"
1087 depends on CPU_VR41XX
1088 help
1089 If you say Y here you will get access to the real time clock
1090 built into your NEC VR41XX CPU.
10911092 To compile this driver as a module, choose M here: the
1093 module will be called rtc-vr41xx.
10941095 config RTC_DRV_PL030
1096 tristate "ARM AMBA PL030 RTC"
1097 depends on ARM_AMBA
1098 help
1099 If you say Y here you will get access to ARM AMBA
1100 PrimeCell PL030 RTC found on certain ARM SOCs.
11011102 To compile this driver as a module, choose M here: the
1103 module will be called rtc-pl030.
11041105 config RTC_DRV_PL031
1106 tristate "ARM AMBA PL031 RTC"
1107 depends on ARM_AMBA
1108 help
1109 If you say Y here you will get access to ARM AMBA
1110 PrimeCell PL031 RTC found on certain ARM SOCs.
11111112 To compile this driver as a module, choose M here: the
1113 module will be called rtc-pl031.
11141115 config RTC_DRV_AT32AP700X
1116 tristate "AT32AP700X series RTC"
1117 depends on PLATFORM_AT32AP
1118 help
1119 Driver for the internal RTC (Realtime Clock) on Atmel AVR32
1120 AT32AP700x family processors.
11211122 config RTC_DRV_AT91RM9200
1123 tristate "AT91RM9200 or some AT91SAM9 RTC"
1124 depends on ARCH_AT91
1125 help
1126 Driver for the internal RTC (Realtime Clock) module found on
1127 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
1128 this is powered by the backup power supply.
11291130 config RTC_DRV_AT91SAM9
1131 tristate "AT91SAM9 RTT as RTC"
1132 depends on ARCH_AT91
1133 select MFD_SYSCON
1134 help
1135 Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1136 can be used as an RTC thanks to the backup power supply (e.g. a
1137 small coin cell battery) which keeps this block and the GPBR
1138 (General Purpose Backup Registers) block powered when the device
1139 is shutdown.
1140 Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1141 probably want to use the real RTC block instead of the "RTT as an
1142 RTC" driver.
11431144 config RTC_DRV_AT91SAM9_RTT
1145 int
1146 range 0 1
1147 default 0
1148 depends on RTC_DRV_AT91SAM9
1149 help
1150 This option is only relevant for legacy board support and
1151 won't be used when booting a DT board.
11521153 More than one RTT module is available. You can choose which
1154 one will be used as an RTC. The default of zero is normally
1155 OK to use, though some systems use that for non-RTC purposes.
11561157 config RTC_DRV_AT91SAM9_GPBR
1158 int
1159 range 0 3
1160 default 0
1161 prompt "Backup Register Number"
1162 depends on RTC_DRV_AT91SAM9
1163 help
1164 This option is only relevant for legacy board support and
1165 won't be used when booting a DT board.
11661167 The RTC driver needs to use one of the General Purpose Backup
1168 Registers (GPBRs) as well as the RTT. You can choose which one
1169 will be used. The default of zero is normally OK to use, but
1170 on some systems other software needs to use that register.
11711172 config RTC_DRV_AU1XXX
1173 tristate "Au1xxx Counter0 RTC support"
1174 depends on MIPS_ALCHEMY
1175 help
1176 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1177 counter) to be used as a RTC.
11781179 This driver can also be built as a module. If so, the module
1180 will be called rtc-au1xxx.
11811182 config RTC_DRV_BFIN
1183 tristate "Blackfin On-Chip RTC"
1184 depends on BLACKFIN && !BF561
1185 help
1186 If you say yes here you will get support for the
1187 Blackfin On-Chip Real Time Clock.
11881189 This driver can also be built as a module. If so, the module
1190 will be called rtc-bfin.
11911192 config RTC_DRV_RS5C313
1193 tristate "Ricoh RS5C313"
1194 depends on SH_LANDISK
1195 help
1196 If you say yes here you get support for the Ricoh RS5C313 RTC chips.
11971198 config RTC_DRV_GENERIC
1199 tristate "Generic RTC support"
1200 # Please consider writing a new RTC driver instead of using the generic
1201 # RTC abstraction
1202 depends on PARISC || M68K || PPC || SUPERH32
1203 help
1204 Say Y or M here to enable RTC support on systems using the generic
1205 RTC abstraction. If you do not know what you are doing, you should
1206 just say Y.
12071208 config RTC_DRV_PXA
1209 tristate "PXA27x/PXA3xx"
1210 depends on ARCH_PXA
1211 help
1212 If you say Y here you will get access to the real time clock
1213 built into your PXA27x or PXA3xx CPU.
12141215 This RTC driver uses PXA RTC registers available since pxa27x
1216 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
12171218 config RTC_DRV_VT8500
1219 tristate "VIA/WonderMedia 85xx SoC RTC"
1220 depends on ARCH_VT8500
1221 help
1222 If you say Y here you will get access to the real time clock
1223 built into your VIA VT8500 SoC or its relatives.
122412251226 config RTC_DRV_SUN4V
1227 bool "SUN4V Hypervisor RTC"
1228 depends on SPARC64
1229 help
1230 If you say Y here you will get support for the Hypervisor
1231 based RTC on SUN4V systems.
12321233 config RTC_DRV_SUN6I
1234 tristate "Allwinner A31 RTC"
1235 depends on MACH_SUN6I || MACH_SUN8I
1236 help
1237 If you say Y here you will get support for the RTC found on
1238 Allwinner A31.
12391240 config RTC_DRV_SUNXI
1241 tristate "Allwinner sun4i/sun7i RTC"
1242 depends on MACH_SUN4I || MACH_SUN7I
1243 help
1244 If you say Y here you will get support for the RTC found on
1245 Allwinner A10/A20.
12461247 config RTC_DRV_STARFIRE
1248 bool "Starfire RTC"
1249 depends on SPARC64
1250 help
1251 If you say Y here you will get support for the RTC found on
1252 Starfire systems.
12531254 config RTC_DRV_TX4939
1255 tristate "TX4939 SoC"
1256 depends on SOC_TX4939
1257 help
1258 Driver for the internal RTC (Realtime Clock) module found on
1259 Toshiba TX4939 SoC.
12601261 config RTC_DRV_MV
1262 tristate "Marvell SoC RTC"
1263 depends on ARCH_DOVE || ARCH_MVEBU
1264 help
1265 If you say yes here you will get support for the in-chip RTC
1266 that can be found in some of Marvell's SoC devices, such as
1267 the Kirkwood 88F6281 and 88F6192.
12681269 This driver can also be built as a module. If so, the module
1270 will be called rtc-mv.
12711272 config RTC_DRV_PS3
1273 tristate "PS3 RTC"
1274 depends on PPC_PS3
1275 help
1276 If you say yes here you will get support for the RTC on PS3.
12771278 This driver can also be built as a module. If so, the module
1279 will be called rtc-ps3.
12801281 config RTC_DRV_COH901331
1282 tristate "ST-Ericsson COH 901 331 RTC"
1283 depends on ARCH_U300
1284 help
1285 If you say Y here you will get access to ST-Ericsson
1286 COH 901 331 RTC clock found in some ST-Ericsson Mobile
1287 Platforms.
12881289 This driver can also be built as a module. If so, the module
1290 will be called "rtc-coh901331".
129112921293 config RTC_DRV_STMP
1294 tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1295 depends on ARCH_MXS
1296 help
1297 If you say yes here you will get support for the onboard
1298 STMP3xxx/i.MX23/i.MX28 RTC.
12991300 This driver can also be built as a module. If so, the module
1301 will be called rtc-stmp3xxx.
13021303 config RTC_DRV_PCAP
1304 tristate "PCAP RTC"
1305 depends on EZX_PCAP
1306 help
1307 If you say Y here you will get support for the RTC found on
1308 the PCAP2 ASIC used on some Motorola phones.
13091310 config RTC_DRV_MC13XXX
1311 depends on MFD_MC13XXX
1312 tristate "Freescale MC13xxx RTC"
1313 help
1314 This enables support for the RTCs found on Freescale's PMICs
1315 MC13783 and MC13892.
13161317 config RTC_DRV_MPC5121
1318 tristate "Freescale MPC5121 built-in RTC"
1319 depends on PPC_MPC512x || PPC_MPC52xx
1320 help
1321 If you say yes here you will get support for the
1322 built-in RTC on MPC5121 or on MPC5200.
13231324 This driver can also be built as a module. If so, the module
1325 will be called rtc-mpc5121.
13261327 config RTC_DRV_JZ4740
1328 tristate "Ingenic JZ4740 SoC"
1329 depends on MACH_JZ4740
1330 help
1331 If you say yes here you get support for the Ingenic JZ4740 SoC RTC
1332 controller.
13331334 This driver can also be buillt as a module. If so, the module
1335 will be called rtc-jz4740.
13361337 config RTC_DRV_LPC32XX
1338 depends on ARCH_LPC32XX
1339 tristate "NXP LPC32XX RTC"
1340 help
1341 This enables support for the NXP RTC in the LPC32XX
13421343 This driver can also be buillt as a module. If so, the module
1344 will be called rtc-lpc32xx.
13451346 config RTC_DRV_PM8XXX
1347 tristate "Qualcomm PMIC8XXX RTC"
1348 depends on MFD_PM8XXX || MFD_SPMI_PMIC
1349 help
1350 If you say yes here you get support for the
1351 Qualcomm PMIC8XXX RTC.
13521353 To compile this driver as a module, choose M here: the
1354 module will be called rtc-pm8xxx.
13551356 config RTC_DRV_TEGRA
1357 tristate "NVIDIA Tegra Internal RTC driver"
1358 depends on ARCH_TEGRA
1359 help
1360 If you say yes here you get support for the
1361 Tegra 200 series internal RTC module.
13621363 This drive can also be built as a module. If so, the module
1364 will be called rtc-tegra.
13651366 config RTC_DRV_TILE
1367 tristate "Tilera hypervisor RTC support"
1368 depends on TILE
1369 help
1370 Enable support for the Linux driver side of the Tilera
1371 hypervisor's real-time clock interface.
13721373 config RTC_DRV_PUV3
1374 tristate "PKUnity v3 RTC support"
1375 depends on ARCH_PUV3
1376 help
1377 This enables support for the RTC in the PKUnity-v3 SoCs.
13781379 This drive can also be built as a module. If so, the module
1380 will be called rtc-puv3.
13811382 config RTC_DRV_LOONGSON1
1383 tristate "loongson1 RTC support"
1384 depends on MACH_LOONGSON1
1385 help
1386 This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1387 counter) to be used as a RTC.
13881389 This driver can also be built as a module. If so, the module
1390 will be called rtc-ls1x.
13911392 config RTC_DRV_MXC
1393 tristate "Freescale MXC Real Time Clock"
1394 depends on ARCH_MXC
1395 help
1396 If you say yes here you get support for the Freescale MXC
1397 RTC module.
13981399 This driver can also be built as a module, if so, the module
1400 will be called "rtc-mxc".
14011402 config RTC_DRV_SNVS
1403 tristate "Freescale SNVS RTC support"
1404 depends on HAS_IOMEM
1405 depends on OF
1406 help
1407 If you say yes here you get support for the Freescale SNVS
1408 Low Power (LP) RTC module.
14091410 This driver can also be built as a module, if so, the module
1411 will be called "rtc-snvs".
14121413 config RTC_DRV_SIRFSOC
1414 tristate "SiRFSOC RTC"
1415 depends on ARCH_SIRF
1416 help
1417 Say "yes" here to support the real time clock on SiRF SOC chips.
1418 This driver can also be built as a module called rtc-sirfsoc.
14191420 config RTC_DRV_MOXART
1421 tristate "MOXA ART RTC"
1422 depends on ARCH_MOXART || COMPILE_TEST
1423 help
1424 If you say yes here you get support for the MOXA ART
1425 RTC module.
14261427 This driver can also be built as a module. If so, the module
1428 will be called rtc-moxart
14291430 config RTC_DRV_XGENE
1431 tristate "APM X-Gene RTC"
1432 depends on HAS_IOMEM
1433 help
1434 If you say yes here you get support for the APM X-Gene SoC real time
1435 clock.
14361437 This driver can also be built as a module, if so, the module
1438 will be called "rtc-xgene".
14391440 comment "HID Sensor RTC drivers"
14411442 config RTC_DRV_HID_SENSOR_TIME
1443 tristate "HID Sensor Time"
1444 depends on USB_HID
1445 select IIO
1446 select HID_SENSOR_HUB
1447 select HID_SENSOR_IIO_COMMON
1448 help
1449 Say yes here to build support for the HID Sensors of type Time.
1450 This drivers makes such sensors available as RTCs.
14511452 If this driver is compiled as a module, it will be named
1453 rtc-hid-sensor-time.
145414551456 endif # RTC_CLASS

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